Using method and preparation method of force-sensitive sensing label

Abstract

The invention provides a use method of a force-sensitive sensing label, the force-sensitive sensing label comprises a label body made of plastic and a single amorphous composite filament which is straightly implanted into the plastic label body in the extension direction of the label body, and the single amorphous composite filament is provided with a glass coating layer. And the glass coating layer is firmly connected with the plastic. When the force-sensitive measuring label attached to or embedded into a measured base material is deformed due to stress, the plastic in the force-sensitive measuring label transmits the stress to the glass coating layer, the glass coating layer transmits the stress to the amorphous composite wire, the coercive force of the amorphous composite wire is greatly changed, and the coercive force of the amorphous composite wire is measured, so that the coercive force of the amorphous composite wire can be measured. And the stress borne by the measured matrix material can be obtained through reverse deduction. The invention also provides a preparation method of the force-sensitive sensing label.

Description

Technical Field

[0001] The present invention relates to the technical field of force-sensitive tags, and in particular to a method for using and a method for preparing a force-sensitive tag. Background Art

[0002] In the prior art, the detection techniques for building structures or main stressed structural components include visual inspection method, rebound method, tapping method, ultrasonic testing, drilling inspection, resistance strain gauge inspection, etc. There are many defects and inconveniences in the existing stress detection methods for building structures or main stressed structural components. For example, the visual inspection method, rebound method, tapping method, ultrasonic testing, and drilling inspection cannot detect the magnitude of the external force on the structure, and can only be detected when the structure is damaged, which cannot play a preventive role; the method using resistance strain gauges has defects such as complex installation and debugging, high cost, and being affected by temperature. Summary of the Invention

[0003] In order to better solve the technical problem in the prior art that the stress borne by a building structure or a main stressed structural component cannot be well detected.

[0004] The purpose of the present invention is to provide a method for using a force-sensitive tag. By implanting a single amorphous composite wire into a plastic tag and attaching or embedding the force-sensitive tag into the matrix material to be detected, through the deformation of the force-sensitive tag, the change in its coercive force is detected. Since there is a corresponding relationship between its coercive force and the magnitude of the external force, the stress situation of the measured matrix material can be simply, efficiently, and accurately measured.

[0005] The present invention provides a method for using a force-sensitive tag to detect the stress borne by a building structure or a main stressed structural component, including the following embodiments:

[0006] Embodiment 1. A method for using a force-sensitive tag, which is improved in that the force-sensitive tag includes a tag body formed of plastic and a single amorphous composite wire implanted straight inside the plastic tag body in the extending direction of the tag body. The single amorphous composite wire has a glass coating layer, and the glass coating layer forms a firm connection with the plastic.

[0007] The method for using the force-sensitive tag includes the following steps:

[0008] Attach or embed the force-sensitive tag to the stressed position of the matrix material to be detected, and the direction of the amorphous composite wire in the force-sensitive tag is the same as the stress direction of the detected matrix material.

[0009] After the matrix material is stressed, the force-sensitive sensing tag attached to or embedded in the stressed position of the matrix material deforms. By detecting the change in the coercive force of the force-sensitive sensing tag with the deformation, based on the pre-established relationship between the magnitude of the force applied to the force-sensitive sensing tag and the magnitude of its coercive force, the force condition of the force-sensitive sensing tag is calculated, thereby inferring the force condition of the matrix material.

[0010] Embodiment 2. The method for using a force-sensitive sensing tag according to Embodiment 1, wherein the amorphous composite direction in the force-sensitive sensing tag is consistent with the original sheet direction of the force-sensitive sensing tag.

[0011] Embodiment 3. The method for using a force-sensitive sensing tag according to Embodiment 1, wherein the coercive force of the amorphous composite wire is 10 - 100 A / m; the diameter of the amorphous composite wire is 10 - 50 microns, wherein the thickness of the glass coating layer is 0.1 - 20 microns, and the length of the amorphous composite wire is 1 - 100 mm.

[0012] Embodiment 4. The method for using a force-sensitive sensing tag according to Embodiment 1, wherein the amorphous composite wire is a cobalt-based amorphous soft magnetic material, which contains:

[0013] a) One or more elements among Co, Fe, Mn, and Ni;

[0014] b) One or more elements among Si, B, and C; and

[0015] c) Optionally, rare earth or transition metal.

[0016] Embodiment 5. The method for using a force-sensitive sensing tag according to Embodiment 1, wherein the amorphous composite wire is a cobalt-based amorphous soft magnetic material, which contains:

[0017] 1 - 15% by weight of Fe;

[0018] 2 - 12% by weight of Si;

[0019] A total of 2 - 25% by weight of one or more selected from B, Nb, Cu, Mn, Mo, Ni, Cr, and Al; and

[0020] The balance of Co.

[0021] Embodiment 6. The method for using a force-sensitive sensing tag according to Embodiment 1, wherein the shape of the force-sensitive sensing tag is rectangular, circular, oval, or any polygon.

[0022] Embodiment 7. The method for using a force-sensitive sensing tag according to Embodiment 1, wherein the area of the force-sensitive sensing tag is 100 - 2500 mm2 , with a thickness of 10 - 100 microns.

[0023] Embodiment 8. The method for using a force-sensitive sensing tag according to Embodiment 1, characterized by comprising:

[0024] Implant the force-sensitive sensing tag into the substrate material to be measured, so that the entire surface of the force-sensitive sensing tag is firmly connected to the substrate material to be measured, and place the substrate material to be measured in an application scenario where stress may be applied, so that when the substrate material to be measured is stressed, the stress can be transmitted to the force-sensitive sensing tag, causing the force-sensitive sensing tag to deform;

[0025] Measure the coercive force of the force-sensitive sensing tag. If the measured coercive force changes, it is deduced that the force-sensitive sensing tag is stressed, thereby obtaining the magnitude of the stress in the substrate material to be measured.

[0026] Embodiment 9. The method for using a force-sensitive sensing tag according to Embodiment 8, characterized in that the step of measuring the coercive force of the force-sensitive sensing tag includes: applying an alternating excitation signal to the substrate material to be measured, obtaining a plurality of induced voltage signals, measuring the peak values of the voltage signals, and judging the stress received by the substrate material to be measured by judging the changes in the peak values.

[0027] The present invention also relates to a method for preparing a force-sensitive sensing tag, which is improved in that it includes the following steps:

[0028] Insert the master alloy rod into the bottom of the glass tube;

[0029] Use high-frequency induction heating to melt the master alloy rod at the bottom of the glass tube to form a molten master alloy, and the molten master alloy rod softens the bottom of the glass tube;

[0030] Draw out a microfilament from the softened bottom of the glass tube to obtain an amorphous composite wire with a glass coating layer; rapidly cool the amorphous composite wire to obtain the cooled amorphous composite wire;

[0031] Wind the obtained amorphous composite wire on a wire take-up roller, and the winding speed of the wire take-up roller keeps the linear speed constant;

[0032] Cut the collected cooled amorphous composite wire into lengths of 1 - 100 mm;

[0033] Before the plastic of the tag body is cured, implant a single amorphous composite wire straight in the extending direction of the tag body into the plastic, and wait for it to cure to obtain a force-sensitive sensing tag blank;

[0034] Cut the force-sensitive sensing tag blank to obtain the force-sensitive sensing tag.

[0035] In this application, a single amorphous composite wire with a glass coating layer is straightly implanted into the plastic label in the extending direction of the label body to make force-sensitive detection labels of different shapes. The force-sensitive detection label is attached or embedded into the substrate material to be detected. Under the action of an external force, the force-sensitive detection label deforms, causing the amorphous composite wire to deform synchronously, and the coercive force of the amorphous composite wire also changes accordingly. Since there is a corresponding relationship between the coercive force of the single amorphous composite wire and the magnitude of the external force, based on the measured magnitude of the coercive force, the force conditions of the force-sensitive detection label and the substrate material to be detected can be simply, efficiently, and accurately measured. Description of the Drawings

[0036] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0037] Figure 1 - Schematic flow chart of the preparation method of the amorphous composite wire in this application;

[0038] Figure 2 - Schematic cross-sectional view of the amorphous composite wire;

[0039] Figure 3 - Schematic diagram of the force-sensitive detection label containing the amorphous composite wire;

[0040] In the figures: 11 - feeding area, 12 - glass tube, 13 - master alloy rod, 14 - heating area, 15 - high-frequency induction furnace, 16 - cooling area, 17 - coolant, 18 - amorphous composite wire, 19 - wire take-up roller, 20 - glass coating layer, 21 - force-sensitive detection label. Detailed Embodiments

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0042] The present invention provides a method for using a force-sensitive sensing tag. The improvement lies in that the force-sensitive sensing tag includes a tag body formed of plastic and a single amorphous composite wire straightly implanted inside the plastic tag body in the extending direction of the tag body. The single amorphous composite wire has a glass coating layer, and the glass coating layer forms a firm connection with the plastic. The method for using the force-sensitive sensing tag includes the following steps: attaching or embedding the force-sensitive sensing tag to the force-bearing position of the matrix material to be detected, and the direction of the amorphous composite wire in the force-sensitive sensing tag is consistent with the force-bearing direction of the detected matrix material. By detecting the change in the coercive force of the force-sensitive sensing tag under force deformation, based on the pre-established relationship between the force magnitude and the coercive force magnitude of the force-sensitive sensing tag, calculate the force condition of the force-sensitive sensing tag, so as to accurately infer the force condition of the matrix material.

[0043] This application defines that the implanted tag body is a straight single amorphous composite wire, ensuring a stable corresponding relationship between the amount of deformation of the force-sensitive sensing tag and the magnitude of the coercive force sensed after being excited by an external magnetic field. Thus, based on the pre-calibrated corresponding relationship between the force magnitude and the coercive force magnitude of the force-sensitive sensing tag, the force magnitude of the force-sensitive sensing tag can be calculated through the change in the coercive force.

[0044] This application also defines that the tag body is made of plastic. Plastic is a high-quality substrate in the present invention, and different plastics have different hardnesses. Plastic can well conduct various forces including pressure, tension, shear force, etc., and can conduct them to the composite wire to cause deformation and generate different coercive forces. Plastic not only has excellent mechanical conduction ability and durability, but also its mechanical conduction ability and the characteristics of force deformation will not change significantly over time, ensuring that the amount of deformation of the force-sensitive sensing tag under external force is long-term stable. It can also resist corrosion and water, and these characteristics can well protect the amorphous composite wire inside the force-sensitive sensing tag, so that after the matrix material is subjected to external force, the force-sensitive sensing tag and the single amorphous composite wire have a long-term stable amount of deformation, ensuring that the measured force magnitudes of the force-sensitive sensing tag and the measured matrix material are accurate for a long time. In the present invention, it is advisable to use plastic with a lower hardness so that the external force can be effectively conducted to the amorphous composite wire, thereby affecting the magnitude of the coercive force. The plastic mentioned in this application refers to synthetic plastic, which can be a thermosetting plastic or a thermoplastic plastic as long as it is in a solid state under the use state. Specific plastics can be selected from polyethylene (PE), polyvinyl chloride (PVC), polystyrene (PS), polypropylene (PP), ABS resin, polycarbonate, etc.

[0045] Due to the magneto-bistable characteristics of the amorphous composite wire, that is, during the magnetization process, when the externally applied magnetic field is equal to or greater than the critical switching field, the magnetization reversal process of the inner-core single domain from one remanent state to another remanent state is completed rapidly in one step. When the force-sensitive sensing tag containing the glass-coated amorphous composite wire is subjected to an external force, the coercive force changes. When an alternating excitation signal is applied to the tag, multiple voltage signals will be induced at different times, that is, the peak values of the voltage signals change significantly. Under the action of an external force, there is a corresponding relationship between the coercive force of the glass-coated amorphous wire with specific composition and size and the magnitude of the external force.

[0046] In this application, the composition and size of the single amorphous composite wire, the preparation material and size of the tag body, and the position of the single amorphous composite wire in the tag body will all affect the corresponding relationship between the force borne by the force-sensitive sensing tag and the magnitude of the coercive force. After the force-sensitive sensing tag is prepared by the method described in this application, those skilled in the art can establish the relationship between the force borne by the force-sensitive sensing tag and the magnitude of the coercive force through a limited number of experiments, so that the force borne by the force-sensitive sensing tag can be obtained based on the detected magnitude of the coercive force. When the force-sensitive sensing tag is attached or embedded at the force-bearing position of the base material, the force borne by the force-sensitive sensing tag can intuitively judge the force-bearing situation of the base material.

[0047] For a specific stress environment of a specific base material, those skilled in the art can also apply an external force simulating the stress environment to the base material with the force-sensitive sensing tag attached or embedded and measure the magnitude of the coercive force, so as to directly establish the relationship between the force borne by the base material and the magnitude of the coercive force through a limited number of experiments.

[0048] The method of the present invention enables the force borne on the base material to be obtained by measuring the change in the coercive force of the amorphous wire in the force-sensitive tag in a non-contact manner, and can even achieve real-time detection of the force-bearing situation of the base, timely discover problems, and avoid irreparable damage to the base due to overloading of the force.

[0049] The method for measuring the coercive force is known. For example, it can be measured according to GB13888-2009 "Method for Measuring the Coercive Force of Magnetic Materials in an Open Magnetic Circuit", or according to the methods disclosed in US 20070114786, US 6622913, US6556139, US20030150921.

[0050] The real-time detection of the coercive force in the present invention can be sensed after being excited by an external magnetic field, so there is no need to supply power to the components implanted in the base material, and there is no problem that the traditional sensor cannot detect due to the depletion of the power supply battery.

[0051] In some embodiments, the direction of the amorphous composite wire in the force-sensitive sensing tag is consistent with the direction of the original sheet of the force-sensitive sensing tag.

[0052] In some embodiments, the coercive force of the amorphous composite wire is 10 - 100 A / m; the diameter of the amorphous composite wire is 10 - 50 microns, wherein the thickness of the glass coating layer is 0.1 - 20 microns, and the length of the amorphous composite wire is 1 - 100 mm. When the coercive force of the amorphous fiber is 10 - 100 A / m, it has the property of the large Barkhausen effect. When the amorphous fiber has a small electromagnetic field intensity, it can be detected by the detection device, reducing the detection difficulty. The length of the amorphous composite wire is 1 - 100 mm. When the length of the amorphous composite wire is less than 1 mm, it is not easily detected by the instrument, and at the same time, the detection range it covers is too small, and multiple detection tags need to be used in combination, increasing the detection cost and being unfavorable for capturing the external force changes at key parts. When the length is greater than 100 mm, it is unfavorable for the production process of the force-sensitive sensing tag and increases the production cost.

[0053] In some embodiments, the amorphous composite wire is a cobalt-based amorphous soft magnetic material, which contains:

[0054] a) One or more elements selected from Co, Fe, Mn, and Ni;

[0055] b) One or more elements selected from Si, B, and C; and

[0056] c) Optional rare earth or transition metal.

[0057] In the amorphous fiber composed of this composition, component a) is the component with ferromagnetic substances, and component b) is the non-metallic alloy element. Component c) is added optionally, and different ratios of the added components may cause the switching field position of the material to produce the large Barkhausen effect to shift. The material generated by the above alloy composition method is easy to be detected by the detection device and is a high-quality material for making the amorphous composite wire.

[0058] In some embodiments, the amorphous composite wire is a cobalt-based amorphous soft magnetic material, which contains:

[0059] 1 - 15% by weight of Fe;

[0060] 2 - 12% by weight of Si;

[0061] A total of 2 - 25% by weight of one or more selected from B, Nb, Cu, Mn, Mo, Ni, Cr, and Al; and

[0062] The balance of Co.

[0063] The amorphous composite wire composed of the above components is preferred in the present invention. Its material source is wide, it is easy to obtain, the processing method is simple and easy to prepare, and it is easy to be detected by the detection device. It is a high-quality material for making the amorphous composite wire.

[0064] In some embodiments, the shape of the force-sensitive sensing tag can be rectangular, circular, oval, or any polygon. The shape of the force-sensitive sensing tag can be adapted to the attachment surface and the inlay structure of the main structure of the matrix material, so as to better measure the deformation. In actual measurement, the appropriate tag shape will be selected according to the actual situation for use.

[0065] In some embodiments, the area of the force-sensitive sensing tag is 100 - 2500 mm 2 , and the thickness is 10 - 100 microns. The area of the force-sensitive sensing tag should not be too large or too small. Usually, in actual use, it should be determined according to the size of the stress-bearing surface of the key structure of the matrix material. Too large an area will lead to an increase in cost and affect the transmission of stress to the amorphous composite wire, thus unable to accurately obtain the information of external force changes. Too small an area will make it difficult to fix the force-sensitive sensing tag and also difficult to detect the change in coercive force, thus making it difficult to measure the change in external force. Similarly, the thickness of the force-sensitive sensing tag cannot be too thick or too thin. Too thick a force-sensitive sensing tag cannot effectively transmit the external force to the amorphous composite wire, and at the same time, in terms of technology, the whole tag is prone to be brittle and easy to crack. Too thin will greatly increase the production cost, and at the same time, it will also lead to easy wear, and the amorphous composite wire will be exposed due to stress, resulting in damage to the tag and other adverse consequences.

[0066] In some embodiments, the above method includes: attaching or embedding the force-sensitive sensing tag into the matrix material to be measured, making the entire surface of the force-sensitive sensing tag firmly connected to the matrix material to be measured, setting the matrix material to be measured in an application scenario where stress may be applied, so that when the matrix material to be measured bears stress, it can transmit the stress to the force-sensitive sensing tag, causing the force-sensitive sensing tag to deform; measuring the coercive force of the force-sensitive sensing tag, and if the measured coercive force changes, it is deduced that the force-sensitive sensing tag is stressed, thereby obtaining the stress magnitude in the matrix material to be measured. There can be a stable corresponding relationship between the coercive force and the stress received, and the measured stress magnitude is accurate. The above matrix material to be measured can be a building.

[0067] In some embodiments, the step of measuring the coercive force of the force-sensitive sensing tag includes: applying an alternating excitation signal to the matrix material to be measured, obtaining a plurality of induced voltage signals, measuring the peak value of the voltage signals, and judging the stress received by the matrix material to be measured by judging the change in the peak value.

[0068] In some embodiments, a method for preparing a force-sensitive sensing tag is characterized by including a step of preparing an amorphous composite wire and a step of preparing a tag body.

[0069] Among them, the step of preparing the amorphous composite wire includes:

[0070] Insert the master alloy rod into the bottom of the glass tube;

[0071] Use high-frequency induction heating to melt the master alloy rod at the bottom of the glass tube to form a molten master alloy, and the molten master alloy rod softens the bottom of the glass tube;

[0072] Draw out a micro wire from the softened bottom of the glass tube to obtain an amorphous composite wire with a glass coating layer; rapidly cool the amorphous composite wire to obtain the cooled amorphous composite wire;

[0073] Wind the obtained amorphous composite wire around a wire collecting roller, and the winding speed of the wire collecting roller keeps the linear speed constant;

[0074] Cut the collected cooled amorphous composite wire into lengths of 1 - 100 mm;

[0075] The step of preparing the tag body includes:

[0076] Before the plastic of the tag body is cured, implant a single amorphous composite wire straight in the extending direction of the tag body into the plastic, and wait for it to cure to obtain a force-sensitive sensing tag blank;

[0077] Cut the force-sensitive sensing tag blank to obtain the force-sensitive sensing tag.

[0078] Currently, the traditional drawing method is often used to prepare ultra-fine metal alloy wires, that is, first heat the metal rod by melting, and then draw it through dies with different diameters, so as to reduce the diameter of the metal wire and form a micro wire with a required diameter. This method has a relatively complex process. Especially when preparing metal wires with a diameter less than 20 μm, the number of drawing times is large and the process is complex, which increases the production cost and cannot meet the existing processing requirements. The present invention provides a method for preparing an amorphous composite wire in a force-sensitive sensing tag. First, melt the alloy rod and the glass tube, and use the traction effect to cool and generate an amorphous composite wire, which is wrapped by a glass coating layer. Finally, cut the amorphous composite wire into the required length and implant it into the plastic to obtain the force-sensitive sensing tag. The above method greatly shortens the process flow and reduces the production cost.

[0079] A method for preparing a force-sensitive detection tag and a method for detecting the stress of a substrate material using the force-sensitive detection tag are provided in this application. The prepared force-sensitive detection tag is attached or embedded at the stressed part of the substrate material such as a building. The plastic in the force-sensitive detection tag transfers the stress to the glass coating layer, and the glass coating layer then transfers the stress to the amorphous composite wire. The coercive force of the amorphous composite wire changes greatly. By measuring the coercive force of the amorphous composite wire, the stress suffered by the measured substrate material can be accurately deduced.

[0080] In the present invention, a single amorphous composite wire is adopted, and its effect is that while achieving accurate stress detection, the least amount of amorphous composite wire is used. By attaching or embedding the force-sensitive detection tag at the stressed position of the substrate material to be detected and detecting its stress, it can be realized that without damaging the structure of the substrate material, the stress of the measured substrate material can be simply, efficiently and accurately measured.

[0081] Embodiment

[0082] Embodiment 1

[0083] As Figure 1 shown, first, a Co-based master alloy rod 13 is provided in the feeding area 11. The melting point of the master alloy rod 13 is 970 °C, the diameter is 7 mm, and the composition is Co71.8Fe4.9Nb0.8Si7.5B15, that is, the Co content is 71.8 wt%, the Fe content is 4.9 wt%, the Nb content is 0.8 wt%, the Si content is 7.5 wt%, and the B content is 15 wt%. A glass tube 12 with a softening temperature of 780 °C is selected, with an outer diameter of 12 mm and a wall thickness of 1 mm.

[0084] Insert the master alloy rod 13 into the bottom of the glass tube 12; melt the master alloy rod 13 using a high-frequency induction furnace 15 and heat it to 1200 °C; its induction heating area 14 is located at the bottom of the glass tube 12 and the master alloy rod 13; use the melted master alloy rod 13 to soften the glass tube 12; draw out the wire by a drawing method; through the cooling area 16 with a coolant 17, the molten master alloy will be cooled to form an amorphous composite wire 18. The diameter of the amorphous composite wire is 28 microns. After collecting the amorphous composite wire 18 through a wire take-up roll 19, it is cut into a length of 20 mm, and the thickness of the glass coating layer 20 is 3 microns. The cross-sectional schematic diagram of the amorphous composite wire 18 is as Figure 2 shown.

[0085] Take the single-made amorphous composite wire 18 and implant it straight into polyvinyl chloride (PVC) so that its glass coating layer 20 forms a firm connection with the polyvinyl chloride, obtaining a rectangular force-sensitive detection tag 21 with a thickness of 50 microns, a length of 25 mm, a width of 20 mm, and an area of 500 mm 2 The schematic diagram of which is as Figure 3As shown

[0086] The base material is a carbon steel plate with a thickness of 5 mm, a carbon content of 0.5%, and an area of 4000 mm 2 . The force-sensitive sensing label 21 is tightly connected to the surface of the carbon steel plate by means of glue. Different magnitudes of external stresses are applied to the carbon steel plate along the direction of the amorphous composite wire 18, and the coercivity is detected. The measurement is carried out according to GB13888-2009 "Method for Measuring the Coercivity of Magnetic Materials in an Open Magnetic Circuit". The measured results are shown in Table 1:

[0087] Table 1 Coercivity generated by the same force-sensitive sensing label under different external stress environments

[0088] Applied stress (MPa) 0 50 100 150 Coercivity (A / m) 23 42 53 66

[0089] It can be seen from the data measured in Table 1 that when the external stress changes, the coercivity changes correspondingly. As the external stress increases linearly, the coercivity basically shows a linear increasing trend. This indicates that when the coercivity changes, the external force received by the carbon steel plate in the direction of the amorphous composite wire of the force-sensitive sensing label changes accordingly. Further, based on the relationship between the measured coercivity and the magnitude of the applied external stress, the coercivity can be measured in a non-contact manner, and the magnitude of the external force received by the carbon steel plate can be accurately inferred.

[0090] Example 2

[0091] The force-sensitive sensing label is prepared by the method of Example 1, and a force-sensitive sensing label consistent with that in Example 1 is obtained. The same carbon steel plate as in Example 1 is selected as the base material.

[0092] The force-sensitive sensing label is tightly connected to the surface of the carbon steel plate by means of attachment. When the external stress applied to the carbon steel plate along the direction of the amorphous composite wire is 100 MPa, under the same other environmental factors, the results of multiple measurements of the coercivity of the carbon steel plate with the force-sensitive sensing label attached are shown in Table 2:

[0093] Table 2 Coercivity generated by the same carbon steel plate with a force-sensitive sensing label attached under the same external stress environment

[0094] Number of times Applied stress (100 MPa) Coercivity (A / m) 1 100 53 2 100 55 3 100 53 4 100 53 5 100 52 6 100 52

[0095] It can be seen from the test data that under the action of the same applied external stress, the measured coercivity basically remains the same, indicating that there is a stable repeatability and an accurate corresponding relationship between the change in the coercivity of the force-sensitive sensing label of this patent and the external force received by the base material. When the coercivity does not change, it means that the external force received by the carbon steel plate in the direction of the amorphous composite wire of the force-sensitive sensing label does not change.

[0096] Comparative Example

[0097] As a control, a force-sensitive detection tag was prepared by referring to the method of Example 1. Two prepared amorphous composite wires were vertically implanted into polyvinyl chloride (PVC). The two amorphous composite wires were parallel to each other and spaced 2 mm apart.

[0098] The force-sensitive detection tag was closely connected to the surface of the carbon steel plate in an attached manner. An external stress was applied to the carbon steel plate along the direction of the amorphous composite wire. When the applied stress was 100 MPa, under the condition that other environmental factors were the same, the coercivity results of the carbon steel plate with the force-sensitive detection tag implanted with two amorphous composite wires were measured multiple times as shown in Table 3:

[0099] Table 3 Coercivity Results of Implanting Two Amorphous Composite Wires

[0100] Number of times Applied stress (100 MPa) Coercivity (A / m) 1 100 42 2 100 67 3 100 73 4 100 50 5 100 61 6 100 70

[0101] Based on the data of Example 2 and the comparative example, it can be seen that when using the same tag body and matrix material and under the same external stress environment, when using a single amorphous composite wire, there is a stable repeatability and accurate corresponding relationship between the change in the coercivity of the force-sensitive detection tag and the external force received by the matrix material, indicating that a single amorphous composite wire can achieve precise determination of the forces on the tag and the matrix material.

[0102] However, when using two amorphous composite wires, this accurate corresponding relationship no longer exists. The test detection of tags implanted with more than two amorphous composite wires also has a huge fluctuation in coercivity under the same external force, thus not having the basic conditions for inferring the force condition of the matrix material through real-time monitoring of coercivity.

[0103] The above is only an exemplary implementation manner of the present invention and is not used to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. A method for using a force-sensitive sensing label, characterized in that, the force-sensitive sensing label includes a label body formed of plastic and a single amorphous composite wire straightly implanted inside the plastic label body in the extending direction of the label body. The single amorphous composite wire has a glass coating layer, and the glass coating layer forms a firm connection with the plastic; the method for using the force-sensitive sensing label includes the following steps: attaching or embedding the force-sensitive sensing label to the stressed position of the matrix material to be detected, and the direction of the amorphous composite wire in the force-sensitive sensing label is consistent with the stress direction of the matrix material to be detected, after the matrix material is stressed, the force-sensitive sensing label attached or embedded at the stressed position of the matrix material deforms. By detecting the change in the coercive force of the deformed force-sensitive sensing label, based on the relationship between the stress magnitude and the coercive force magnitude of the force-sensitive sensing label established in advance, the stress condition of the force-sensitive sensing label is calculated, thereby inferring the stress condition of the matrix material.

2. The method for using a force-sensitive sensing label according to claim 1, characterized in that, the direction of the amorphous composite wire in the force-sensitive sensing label is consistent with the original sheet direction of the force-sensitive sensing label.

3. The method for using a force-sensitive sensing label according to claim 1, characterized in that, the coercive force of the amorphous composite wire is 10 - 100 A / m; the diameter of the amorphous composite wire is 10 - 50 microns, wherein the thickness of the glass coating layer is 0.1 - 20 microns, and the length of the amorphous composite wire is 1 - 100 mm.

4. The method for using a force-sensitive sensing label according to claim 1, characterized in that, the amorphous composite wire is a cobalt-based amorphous soft magnetic material, which contains: a) one or more elements of Co, Fe, Mn, Ni; b) one or more elements of Si, B, C; and c) optional rare earth or transition metal.

5. The method for using a force-sensitive sensing label according to claim 1, characterized in that, the amorphous composite wire is a cobalt-based amorphous soft magnetic material, which contains: 1 - 15% by weight of Fe; 2 - 12% by weight of Si; a total of 2 - 25% by weight of one or more selected from B, Nb, Cu, Mn, Mo, Ni, Cr and Al; and the balance of Co.

6. The method for using a force-sensitive sensing label according to claim 1, characterized in that, the shape of the force-sensitive sensing label is rectangular, circular, oval, or any polygon.

7. The method for using a force-sensitive sensing label according to claim 1, characterized in that, The area of the force-sensitive sensing label is 100 - 2500 mm 2 , and the thickness is 10 - 100 microns.

8. The method for using a force-sensitive sensing label according to claim 1, characterized in that, includes: implanting the force-sensitive sensing label into the matrix material to be detected, making the entire surface of the force-sensitive sensing label firmly connected with the matrix material to be detected, and setting the matrix material to be detected in an application scenario where stress may be applied, so that when the matrix material to be detected bears stress, the stress can be transmitted to the force-sensitive sensing label, causing the force-sensitive sensing label to deform; Measure the coercive force of the force-sensitive sensing tag. If the measured coercive force changes, it is deduced that the force-sensitive sensing tag is subjected to stress, thereby obtaining the magnitude of the stress in the matrix material to be measured.

9. The method for using a force-sensitive sensing tag according to claim 8, wherein, the step of measuring the coercive force of the force-sensitive sensing tag includes: applying an alternating excitation signal to the matrix material to be measured, obtaining a plurality of induced voltage signals, measuring the peak values of the voltage signals, and judging the stress received by the matrix material to be measured by judging the changes in the peak values.

10. A method for preparing a force-sensitive sensing tag, wherein, it includes the following steps: Insert the master alloy rod into the bottom of the glass tube; Use high-frequency induction heating to melt the master alloy rod at the bottom of the glass tube to form a molten master alloy, and the molten master alloy rod softens the bottom of the glass tube; Draw out a microfilament from the softened bottom of the glass tube to obtain an amorphous composite wire with a glass coating layer; rapidly cool the amorphous composite wire to obtain the cooled amorphous composite wire; Wind the obtained amorphous composite wire on a wire collecting roller, and the winding speed of the wire collecting roller keeps the linear speed constant; Cut the collected cooled amorphous composite wire into lengths of 1-100 mm; Before the plastic of the tag body is solidified, implant a single amorphous composite wire straight in the extending direction of the tag body into the plastic, and wait for it to solidify to obtain a force-sensitive sensing tag blank; Cut the force-sensitive sensing tag blank to obtain the force-sensitive sensing tag.

Images